Keystones — Bedrock
Five GCSE retrieval questions · 21 July 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 87
Answer: 21 + 87 = 108 -
2. Algebra Substitution
If x = 3, find the value of 8x + 4
Answer: 28 -
3. Geometry Converting lengths
Convert 30cm to mm
Answer: 300mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:32
Answer: 5:8 -
5. Statistics Mean
Find the mean of: 13, 4, 16
Answer: 11